Frank mossberg



(No Model.)

F. MOSSBERG. )JEWELERS TURKSfiEAD ROLL. Y

Patented Oct. 11, 1892.

INVENTUR ATTORNEY WFFNESSEE SSIGNOR TO THE OF SAME PLACE.

JEWELERS TU RKS-HEAD ROLL.

SPECIFICATION forming part of Letters meet No. 484,108, dated October 11, I892.

Application filed March 22, 1892.

To all whom it may concern.-

Be it known that I', FRANK MOSSBERG, of Attleborough, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Jewelers Turks-HeadRolls; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to the class of rolling-machines used by jewelers for reducing bars of metal to different sizes. The machine is known specifically as a turks-head.

The object of the improvements is to produce a machine that can be used for rolling stock down in both directions, vertically and laterally, at one operation to different sizes with one set of rolls without changing any of them for other rolls of a different thickness, as it is necessary to do in the usual form of turks-head. It is fully illustrated in the accompanying drawings.

Figure 1 isa front elevation of the machine, the front plate being broken away to show the position of the rolls, &c. d Fig. 2 is a vertical section taken on line as m in Fig. 1, looking to the left. Fig. 3 isa horizontal section taken on line y y in Fig. 1, looking upward. Fig. 4: is a diagram showing the relative positions of the rolls and theirarbors. Fig 5. shows a side elevation of a rollcarriage. Fig. 6 represents a face view of the head 'of one of the graduated setting-screws.

The case A is made in the shape of a vertical shallow box. The bottom or back and the sides are preferably made integral in one casting, with partitions to serve as guides for some of the carriages carrying the rolls. A cover H is secured on the front of the case by screws, and both cover and back have central apertures made through them. There are four carriages E B O D, all made alike in size and shape, carrying the four rolls 1) c d 6, respectively, which are fast on arbors having open bearings in the sides of the carriages. (See Fig. 5, which is a side view of one of them.) Each of these carriages has a short screw 6 b c d, which screws are fitted to screw into the closed end of the carriages two bars together, that Serial no; 425,924. m. model.)

and have broad circular heads with holes in their peripheries to receive a bar-wrench to turn them by. These screws are for the purpose of adjusting therolls to take up any reduction in size resulting from wearing or from grinding to true them off and are not for use in setting the rolls for different sizes of bars.

Carriage B is held between one side of the partition 0. and a sideof the partition j, and has no motion except a slight one toward the center of the case when adjusted for wear, c.

Carriage E is held in a recess in the bar 71., and has, besides the slight motion in that recess for adjustment by screw e, a motion with the bar in a direction to and from the center of the case controlled by the screw a. The bar it is guidedin its movements by one end resting against the partition a and the other end against'the inside of the case A.

The carriage D is held in a recess in the bar 9 and has the same arrangement of adjustment for wear as carriage E, and the bar g has a recess in its upper end, in which the bar It slides, (see Fig. 2,) which connects the when the bar h is moved up or down the bar g goes with it, though at the same time the bar 9 and carriage D have a motion to and from the center controlled by the screw 19.

Carriage O is held in a recess in the barf and has no movement toward the center, except for adjustment for wear by the screw 0; but it is connected by a double sliding clamp (see Fig. 3) to the bar g, that when the latter bar is moved to or from the center the barf and carriage C move laterally with it.

It will be seen that the relative positions of the rolls is this: Roll 5 has its periphery resting against one of the plane faces of the roll a, and roll 6 has its periphery resting against one of the plane faces of the roll d, which roll has its periphery resting against one of the faces of roll 0, the latter roll being in like position with regard to roll I), from which we started. Now if the roll 6 is drawn up from the center of the screw a its plane face will slide on the periphery of the roll I). At the same time the screw 41, by drawing up the bar 71. with roll e, will also, by its connection with bar g, draw up that bar and roll (1, the pethe face of the riphery of which will slide on roll '0. In this way the opening between the rolls will be lengthened vertically; but the rolls will still be in contact with each other. Then by drawing bar 9 from the center by the screw 19 the roll 61 will slide its plane face along the periphery of the roll e, and the bar 9 will, by its connection with the barf, move that bar and roll laterally and slide its perlphery on the plane face of the roll I), which will enlarge the center opening laterally, still maintaining the contact of the rolls with each other. This is shown in Fig. 4, Where the there is no opening; but by turning the screw 92 the roll 6 is raised to dotted line a, and the roll d, being drawn out by its screwp and up by the connection of its bar 9 with the bar h, reaches the dotted lines .9, and the roll 0, by the connection of its bar with the bar f, is moved to the dotted line 8 and a square opening is formed in the center. It will be seen that the opening between the rolls can be made longest either vertically by using the screw 92, or laterally by the screw p, or square by turning both equally,' and that rectangular bars, square or oblong, can be rolled to any size not over that of the thickness of the rolls.

The setting-screws n 19 are alike in shape and size. They have collars on them inside the sides of the case to resist the thrust of the rolls and are fitted to screw into the bars h and g back of the carriages. The screw it passes through a round hole in the side of the case A; but the hole for the screw 19 in the side of the case is made oblong to allow the screw to rise with the bar 9.

adjustable laterally, placed to run between the upper and lower rolls, the thickness vertically of the bar rolled being that of the side rolls, and for each different thickness a different pair of rolls made it necessary to keep a large stock of rolls on hand with the trouble of exchanging The turks-head in use byjewelers is made the case and bearing against bars h g, and

must be provided, which them for difierent sizes. A turks-head differs from jewelers reducing-rolls in having no mechanism for driving the rolls, as it is used like a draw-plate, the end of the bar to be reduced being made small enough to pass through the opening between the rolls and I around a center, each roll having its periphery in contact with the plane face of the roll next to it, the first and second roll having a connection between them, whereby when the first roll is moved the second roll will be moved in the same direction, and the second and third rolls having a connection between them, whereby the second roll being moved the third roll will be moved in the same direction with said connections, and means for moving the first and second rolls, substantially as specified.

2. The combination of the case A, carriages B, O, D, and E, arranged to slide in ways in said case, rolls 6, c, d, and e, held in hearings in said carriages, adjusting-screws b, 0', cl, and e in the rear end of said carriages, bars 72, g, and f, having sliding connections With each other, connecting carriages O, D, and E, and screws 42 and p, threaded through the sides of the case and bearing against the bars 9 72, respectively,substantially as set forth.

3. The combination of the case A, carriages B, O, D, and E, sliding in ways therein, rolls [2, c, d, and 6, held in bearings in said carriages, screws 71 and passing through the sides of bars h, g, and f, arranged to slide in ways and connected together by sliding connections, substantially as set forth.

FRANK MOSSBERG.

I Witnesses:

BENJ. ARNOLD, JAMES E. ARNOLD. 

